Graphical user interface for a display screen or portion thereof



FIG. 1 is a front view of a graphical user interface for a display screen or portion thereof showing our new design;

FIG. 2 is a front view of a graphical user interface for a display screen or portion thereof showing our new design;

FIG. 3 is a front view of a graphical user interface for a display screen or portion thereof showing our new design;

FIG. 4 is a front view of a graphical user interface for a display screen or portion thereof showing our new design;

FIG. 5 is a front view of a graphical user interface for a display screen or portion thereof showing our new design;

FIG. 6 is a front view of a graphical user interface for a display screen or portion thereof showing our new design; and,

FIG. 7 is a front view of a graphical user interface for a display screen or portion thereof showing our new design.

The broken lines showing a display screen or portion thereof forms no part of the claimed design. 

The ornamental design for a graphical user interface for a display screen or portion thereof, as shown and described. 